Kicker/RecentDocument display file path as decoration
Summary: Also add an open containing folder action
Test Plan:
Reviewers: VDG, Plasma, ngraham, ervin, hein
Reviewed By: VDG, Plasma, ngraham, ervin, hein
Subscribers: davidre, broulik, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D26121